Use a Python source file (linecache.__file__) instead of /etc/passwd.

Modify also linecache docstrings to clarify the linecache is written to cache
Python source files, not any text files.

source files, even if "it works" with other text files encoded to UTF-8.

PyMarshal_ReadShortFromFile() can fail.

Patch by Thomas Kluyver.

The current documentation only mentions heap[0] as the smallest element in the
beginning, and not in any of the methods' docs. There's no method to access the
minimal element without popping it, and the documentation of nsmallest is
confusing because it may suggest that min() is the way to go for n==1.

Patch by Håkan Lövdahl.

Patch by Demian Brecht.

handle exceptions raised by an iterator.  Patch by Alon Diamant and Davin
Potts.

Patch by Lars Buitinck.

Patch by Mike Short.

Fixed 2 to 3 porting bug in pynche.ColorDB.

Patch by Mark Lawrence.

Original patch by Demian Brecht.

imp.reload().  Patch by Thomas Kluyver.

Replace "running" with "not started" and don't show the pid if the subprocess
didn't start yet.

Also, document SystemExit.code attribute explicitly.

Patch by Martin Panter.

Patch by Sayan Chowdhury.